VND810SP-E datasheet(19/28 Pages) STMICROELECTRONICS

Part #	VND810SP-E

Description	Double channel high-side driver

PDF	28 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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19 / 28 page

VND810SP-E

Application information

Doc ID 10880 Rev 3

19/28

No false open-load indication when load is connected: in this case it needs to avoid

VOUT to be higher than VOlmin; this results in the following condition:

VOUT =(VPU/(RL +RPU))RL <VOlmin.

No misdetection when load is disconnected: in this case the VOUT has to be higher than

VOLmax; this results in the following condition RPU <(VPU –VOLmax)/ IL(off2).

Because Is(OFF) may significantly increase if Vout is pulled high (up to several mA), the

pull-up resistor RPU should be connected to a supply that is switched OFF when the module

is in standby.

The values of VOLmin, VOLmax and IL(off2) are available in Section 2.3.

Figure 25. Open-load detection in off-state

VOL

V batt.

VPU

R PU

R L

D R IVER

LO G IC

IN PU T

STATU S

VCC

OU T

GRO U ND

IL(off2)

VND810SP-E Datasheet(PDF) 19 Page - STMicroelectronics